Antifriction-bearing.



L. W. ZAAR.

ANTIFRICTION BEARING. APPUQATION FILED JAN. 12. I917.

Patented Oct. 16, 1917.

mem s. zAA t. or CHICAGO, ILLINOIS.

. To all whom itm I :"has for itslprincipal object the same object,

Be it known that I, Lunwie ZaAma citizen of the United States, and a resident ofChicago, inthe county of Cook andState of Illinois, have invented certain new and useful Improvements in Antifriction-Bearings, of whicl the following is a specification. y p

This invention relates to improvements in antifrictionbearings of the roller type, and I it cons sts incertainpeculiarities ofthe conof'the variousfpartsthereof as willfbe here- 1 inaft'er, more ,f ully set forth" and specifically claimed.

I The present invention is somewhat similar in construction, operation and appearance to that shown andset forth in my application Serial No. 92,575, filed April 21, 1916, for improvements in. antifriction bearings and as that disclosed in my aforesaid applicatiointo wit, to provide an antifriction bearing of the roller type, which shall be extremely simple andinexpensive in construcp v p sponding parts throughout the difierent tion, strong and durable, and so madethat the parts thereof can be readily. assembled i oruse, or disassembled forrepairs or the replacement oi p arts shouldthey becomefdeifective or impaired.

Another, important object of theinvention is to so construct,

combine and arrange the various parts of the hearing. as to reduce to a minimum, the

frictionf incident to the operation of" the V 35.

parts, to theend, that greatgease of operaftion, 'as weHj as,..hig-h rotary speed will be affordedto the partorfparts of the machine or machinery for which the bearingis used. Stilllanother object-of the invention isto provide means. for circulation or passage of air between certaintparts of the devicein j ordertto keep them .cool or at a reduced temperature, as well as, to affordmeans for bricant. l

, distribution between certainparts of ya lu- Y Other objectsand advantages; of thelinisclosed in the sub-joined vention will be,

i description and 1 explanation.

M w In glthe,,acfompanying ,drawing; which v to. i s rate i venti n a a. a

face viewof. i an -fr ction f lbearing device ,einbodying fone form of the Tinvention, .show ing theparts thereof in p0- siti iiier. 115s amend e ts by. rrpvs h nnrirnIorion-nnamne.

Specification of Letters Patent. Pa'fi nt gd @91 169 191L170 Application filed lfanuary 12,1917. Serial No. 141, 932.

the arrows.

Fig. 3, is a detached perspective of one of the larger rollers used in the construction partly inv elevation taken on line 22 of. Fig. 1 looking in the direction indicated by illustrated in Figs. 1 and 2 of the drawing. -F 1g. 4, is a similar view of one of the I smaller rollers used in said construction. structiomnovel arrangement and operation Fig. 5, is a face view of'the anti-friction bearing device embodying a modification in the construction thereof.

i Fig. 6, is a sectional view takenon line 6- -6 of Fig. 5, looking in the direction indicated by the arrows, but showing the rollers in elevation.

Fig. 7, is a detachedperspective view or. oneof. the larger rollers used in the modified Like numerals of reference refer to correviews of the drawing.

. Referring now to Figs 1 to a inclusive of the drawing the reference numeral 10 desig nates as a whole the outer r ng or casing,"'

and; the numeral ll designates as a whole,

the inner ring or casing for retaining the rollers of the device in operative position.

As is clearly shown in Fig. 2, the outer retaining ring 10 is composed of two mem- .bers 12 and 13 which are circular in shape and are adapted to fit closely together, but separably, at their meeting orinner edges. Each of thememhers 12 and J 13 constituting. 1 the outer retaining ring 10 is'p'rovided at its outer edge with an inwardly extended annular flange 141- so. that when the. members 12 and 13 are in juXta-position as shown in Fig. 2, a circumferential groove 15, A, angular in CIOSS-SGClZIOII will be provided as atrackior the larger rollers 16 of thede vice, of the construction which. is now under COIlSlClQIZLtlOIl. The inner retain ng ring ll consists of two circular members or; rings 17 and 18 which are adapted to fit" closelytogether, but separably as is clearly shown in Fig. .2of the drawing. Each of the members 17 is provided at its gouter edge with an annular outwardly exs the smaller rollers 23 which arelocated alternately between the larger rollers 16 and the channels 15 and 20, and that the larger 'rollers will have independent tracks or -guide-ways from those of the smaller rollers.

tended flange 19 which when the members 17 and 18 are'in uxta-position .wlth oneanother as shown in Fig. 2, will provide a cir-' cumfei'ential groove or channel 20 on the outer surface of the ring 11 asatrack' for the larger rollers 16 of the device. The members 12 and 13 of the outer retaining ring 10. and themembers'17 andlS ofv the inner retaining ring 11, may be held in contact with each other as shown in Fig. 2, by means of a housing, (not shown) or otherwise, when the device is in place on a shaft, axle or other part-of the machine'to which the device may be applied. Each of the larger rollers 16 is provided with a spiral groove '21 extended from one end of the roller to the other end thereof, which groove will permit of the passage-of air, or will act as'a distributing channel for the distribution of a lubricant between the parts 10,11

"and 16 as is obvious. It will be observed by reference to Figs. 2 and 3 of the drawing, that the'rollers 16 are truecylinders, that is they have no reduced portion at their ends,

and that they are adapted to track in the grooves'or channels 15 and 20 of the inner and outer retaining rings 10' and 11, respectively, when said members are placed in position for retaining the rollers therebetween.

W'hen thus positionedit will be understood that the flanges 14 of the outer retaining ring 10, will be concentrically located with respect to the flanges 19 of the inner retaining ring and at a suliicient distance apart to provide a track for. the reduced ends 22 of in contact therewith. By the above mentioned arrangement of the flanges 14 and 19 on the retaining rings of the device, it will U be understood and seen by reference to'Fig.

2', that *the reduced portions 22 of the smaller rollerswill track on the adjacent surfaces of the flanges 14 and 19 but will be out of contact with the adjacentsurfaces of Referring now to Figs. 5 to 8 inclusive, the

outer retaining ring is designated as a J. wholeby the numeral 24 and consists of" a single piece having at each of its edges an inwardly extended annular flange 25 which flanges'produce on the inner surface of the fon' with an inwardly extended circumferenfaceas is clearly shown in Fig. 6 of the this modified construction 'the'imier retainingring of the device is designated as whole by the numeral 27 and consists of "two-me mbers28- and 29 each ofwhichis flanges 30 is provided on its outer surface with an annular recess 32 for'the'purpose to ring 24a channel which is substantially an- 'glllitl" in cross-sect on. The ring 24 is provided midway between'the -flanges'25 there- -wardly extended annular. flange 30 which when the members 28 and 29 are placed together. or in their operative position as shown in Fig. 6 will produce on the outer surface of the ring 27 a circumferential channel which is substantially rectangular ingress-section. By reference to Fig. 6 it will be seen that one of the members of'the inner retainingi-iiig 27, usually the member 28, is wider than the other member of said ring, and has on its outer surface at its inner edge an annular bead or rib 31 which is rounded on its outer surface. Each of the be presently explained- The'larger rollers 33 used inthe modified construction are each cylindrical in shape and without reduced portions at their ends. Each of'these larger "rollers is provided at its middlewith afcir= cumferential groove to i receive the beads or ribs .26 and 31 on the inner surface of the ring 24 and outer surface of the ring 27 respectively. It will be observed by referof the grooves 34 and thebeads or ribs wilL permit the passage of airor "a lubricantwhich may be conducted thereto or therefrom by means of the spiral grooves'35 with which the larger rollers in themodified construction are provided on each side of the circumferential groove 34 therein. Each of the smaller rollers 36 used in thEhlOdified construction is provided "at each of'its ends with a reduced'portion or stud shaft '37 each of which shafts has on its outer end,

an annular flange 38, seeFigs. 6 and 8 of the drawing. These flanges will operate inv the recesses 32 of the flanges-30 on'the inner retaining ring 27 and'also serve torhold 11113081131011 the rings 39 "one OfWlllCll is 10- -cated "on each side of the rollers 33 and 36 and between the shafts 37 on the smaller rollers'and the flanges 25 of'the outer "retaining'ringl As the flanges or disk heads on the smaller rollers 36 overlap the'rings 39 it is evident that said rings will be loosely retained in their respective positions at the ends or sides of thero'llers.

While have shown Fig. 2 of tliedra'wmg, the inner and outerretaining? rings as be ng made oftwo pieces each, yet Idesi're to be understood that either the "outer orinner ring maybe madeiof a single piece and the other 'ofztwopie'ces as shown in LFig. "6' of the drawingg' 'without"departing-from 13 0 .90 ence to Fig. 6, that the outer portions ofthe Y grooves 34'engage the outer or side portions the spirit of the invention. By making one or both of the rings of two pieces, it is evident that the assemblage of the parts or their disassemblage will be greatly facilitated.

From the foregoing and by reference to device, the inner ring which is adapted to carry the shaft, axle, or other part of the machine will have or exert greater pressure on some of the :rollers than on others, and that those rollers which are subjected to considerable pressure between the outer and retaining ring will bemoved in pairs in the same direction as indicated by the arrows in Figs. 1 and 5 of the drawing.

While I have illustrated and described an embodiment of the invention, in two forms of construction for carrying it into effect, yet it iscapable of variations and modifications without departing from the spirit of the invention. 1, therefore, do not wish to be limited to the precise details of the construction as set forth and disclosed, but do: sire to avail myself of such variations, modifications and modes of the use of the invention as come within the scope of pended claims.

7 When the peripherally grooved rollers and tially concentric relation and both having an s the heads or ribs on the retaining members are employed, itwill be understood that the said rollers will fit loosely between the flanges 25 and 25, 30 and 30, which produce the channels or grooves in which the said rollers travel.

I claim:

1. The combination with an inner and an outer retaining member located in substanannular angular groove and a pair of flanges on their adjacent surfaces, at least one of said members also having within its groove a circumferentially disposed bead or rib, of

a plurality of large cylindrical rollers and a plurality of smaller cylindrical rollers having reduced cylindrical portions at their ends, said rollers being movably interposed between said retaining members and arranged alternately with respect to one another, each of the rollers of the larger set having a circumferential groove between its" ends to receive said ribs or beads and each of said larger rollers having its bearings in the ap the grooves ofthe retaining members, and the set of smaller rollers having its bearings on said flanges of the retaining members.

2. The combination with an inner and an outer retaining member'located in substan tially concentric relation and having annular grooves and flanges on their adjacent surfaces, each of said members having within its groove a circumferentially disposed head or rib, of a plurality of large cylindrical rollers and a plurality of smaller cylindrical rollers having reduced cylindrical portions at their ends, said. rollers being movably interposed between said retaining members and arranged alternately with respect to one another, each of the rollers of the larger set having a circumferential groove between its,

ends to receive said ribs or beads and each of said larger rollers having its bearings in the grooves of the retaining members, the set of smaller rollers having its bearings on said flanges of the retaining members, each of the reduced portions of said smaller members having a peripheral flange at its outer end, and a ring surrounding the group of reduced portions at each of the ends of the smaller rollers and interposed between said peripheral flanges and the ends of the larger rollers.

8. The combination with an inner and an outer retaining member located in substantially concentric relation and having annular grooves and flanges on their adjacent surfaces, of a plurality of large rollers and a plurality of smaller rollers having reduced cylindrical portions at their ends, said rollers being movably interposed between said Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G. 

